Hoist



Oct. 13,. 1925..

A. G. LEAKE HOIST` Filed Nov. l2, 1924 2 Sheets-Sheet l @Horne/11a oct.13, 1925. 1,557,462

A A. G. LEAKE Filed Nov. 12, 1924 2 Sheets-Sheet 2 i Patented Oct. 13,1925,.

UNITED STATES ARS-nnen etienne F sainement-wNNEeTicen HOIST.

Applicatipn iledrlovelnber 12, 14924. YSerial No. 749,388.

To all wlzpm t may ogn/cern:

Be it known that I, ARTHURG. LEAKE, .e citizen of the United States,residing et Bridgeport, county of Fairfield, `State of `GQnneetlout;lleve `invented e new and ssul Heist, .of Whsh the ,follewling is especi- This inventonreletes te eutemebleliests' 0r lifts which ere.espseelly edepteflfor use at service stations or garages t`o lift one vend of .an automobile to allow easy access,

to the underside thereof for inspection or repair purposes, and has foran object :to providea device of this character which Will be verysimple in constructiommay be man- Vfactured almost entirely fromVstandard Vs trliutu'ral shapes so that it .may be made at minimumexpense, which Will .be efficient :and ,reliable in Operation and notlikely t0 be easily gotten eutof Order- It is also an object 4of theinvention to construct a .device "of `this character which when .Het inuseL will berreetieally below theflfeor y0.1 erede level AWhere it isOut 0f the wey, elldwhere the wheels ef .the ante mobile to be liftedmaybe run directly onto .the supports..

'With Y,the ioregengend ether Objects in rient, I have ld esised Ltheconstruction lil-V lustrated .in the accompanying. drawings farming eYpart :0f this lsreeeetien, .sim-iler reference characters f beingremployed throughout the Various figures to indicate"k correspondingelements. In these drawings, ,-Fg, lise vertieel section through mymproved heist installed, the section beine .sub-

` stantallyenlne.lei erf Fie-12, and sil eut@- .metile t-O-beliftedfbeng slewn in elevation" .Fig-

e ,ter `plan View 0f the heist With the never 'Plates removed 4 Thisimproved hoistor ,Q Fig. va partialside elevation and partial seele-i011ef enel @fthe Wheel supports, the v.sectioli beingfsubsztantially vonline il of Fig. 5.

.Fig 5 .is a transverse section through one` O ff'lle Wheel surnets; the.see'ten being sub: stentielly :Q11 line `5 5 .0f Fig? 4f and" 6 .is atop plan vieWiof oneend ofY Fig. 3 is'avertical section substantially`on `their sliding off. ,'Thely;

lgirad-ewhere" it xplacedlout ofat when "notV use isfentrelyf out of theWay andwill not interfere with other operations inthe Vicinityand willnot occupy Valuable space. Also by placing it below grade the car may berun directly .on-to the 'lift Without V running it up an ineline orraised devices. type designed for liftingone end of an automebile togive access to the undersidevthere vof While ftluegwheels at theotherendfrunr on the grade. p ystruction and is so designed @that itmaybe It is also Y(ery simple conmade almost entirely of standardstructural shapes. A

In the present embodiment grade is Vindicated at 10, which may-bethe-floor of a garage orthe ground level of anoutside installation,andthe lifting `mechanism is mounted in a pit 11,'the Walls of which maybe of any suitable `material such as concrete] VMounted in thispit,preferably atthe opposite ends thereof, are suitable `upright guides 12,in the present' case T'bars Valthough other shapes may be employed ifdesired, and lthese bars are lheld in a rigid uprightpositionby anysuitable-means, such v as short Z;bars 1 3 embedded inthe concrete andto which the guide bars are secured.

The hoist proper comprisesa pair of upright supports 1 4; preferablyoflsbeam construction, there being elle of these supports foreach oftheitwo Wheels rlateither end of the automobile `16' ,to be operatedupon, and theflanges at one side Qfthese'fbeams n' engage the guides `12' and `:are guided thereby. Each Vfithes'e supports 4carries at itsupper' fend Va Wheel -su`pport-` 17,' preferably inthe form of a channeliron With'its flanges 18 extendingfupivardly as shown* These suppertsareattached "f to the upper end of thel'su rports ifkbysuitableangleplates 19 .and Ft e opposite kends are supported by braces `20. "Theflanges 1'8Fforml`guide`walls at" `,the opposite edges of these supportsfor the'wheels l15 of the car and Wfill prevent also provide lateral,stopwnieansfor the [Weel-Stops' 21; These steps may be of veritas.eonamaionsbut are" preferably castings, `substantieily as shovyntpseat'ibetiWen'Ithe-flanges 1138, and hare side wallsf22 and' endwallslQB 'to engage thesides and"`fro1 1t orv rearl `ef the Wheel toprevent their running olf `the support V17. l"Ilhey areremovably*andfadj'ustabiyg secured -tithef supports by anyfsuirablefe'eeeslseeh ie rsfs'fsrsese hsssferesths under side thereof arranged topass through a transverse opening 25 in the bottom wall of the supports17 and communicating with -a longitudinal slot 26, and thus are placedin position as shown in Figs.-4 and 5. The clamping action of the head24 on the supports 17 will hold the stops in the proper location. a,

At their lower ends the' upright supports 14 are vconnected by atransverse beam, 1n the present instance composed of two spacedsupporting beams, such as I-beams 30, eX-

tending across the pit and embedded at.

their opposite ends inthe concrete walls of the pit. These beams alsocarry guides 31, suchras angle plates which are secured to these beamsand engage the inner flanges of the upright supports 14 to provideadditional guiding means-therefor. Extending between the beams l3 0 isanother transverse beam preferably composed of a pair of channel irons32 secured to the beams by any suitable means, such as angle ,plates 33.

a The channel irons 27 are spaced from each other so as to carrysuitable pulley wheels 34 mounted in suitable supports 35, and thechannel irons 32 are also spaced to carry between them' pulley wheels 36mounted on suitable supports 37. A flexible cable 38 runs over thesepulleys and to a rotatable drum 39 whereby the supports 14 may be raisedand lowered. In the present showing the otherend of the kcable isconnected to one of the lower channel irons 27.

Suitable mechanismVI is provided for operating the drumy 39 to wind upand unwind the cable for the purpose of raising and lowering the hoist,such as a pinion 41 meshing' with a' gear 42 connected to the drum, thepinion `41 being carried by a shaft 43 which may be operated either byhand orrby any suitable motor 44. This motor may be either electrical,hydraulic, air` or any other suitable type that is found desirable orconvenient, and may be connected to the shaft 43 by a suitable worm andgear drive 45-,46. The gear 46 may be connected to the shaft 43v with adetachable coupling 47 so thatvifthe motor fails for any reason it.Vmayr be disconnected from the drum and therdrurnoperated byV hand byanother wormjand gearwdrive 48`-49 The worm 48 may be mounted on a shaftcarried, vina suitable bracket 50 which may be mounted so thatlthe wormmay be moved toY and from engagement with the gear.v 49.

drum this hand drive is disconnected, it be-` Adja-A cent the upper endof the pit arek a pair of` ing intended for use only in emergencies, theworm 48 being operated by any suitable hand means as a crank or wheel51. It will be noted that by using the worm and gear drive the hoist isalways rigidly held in any given position when the power is turnedAofl". The motor and drum are preferably mounted in asmall pit orchamber 52 at one side of the main pit 11 and immediately below thesurface of the floor where they are easily accessible for inspection,oiling and repair.

The tops of the pits are closed or covered with suitable cover plates 53and 54, suitable supporting means being provided therefor. The coverplate 54 may be mounted on suitable angle iron brackets 55 and extendsbetween the wheel supports 17. Of course, when these wheel supports aremoved upwardly as the hoist is raised there will be a space left betweenthe ends of this cover and the sides of the pit. This will be closed bysuitable cover plates 56 carried by the upright supports 14 at asuitable distance below their 'upper ends, so that as these supi portsare raised to their maximum extent these plates will move into theopenings left by the wheel supports 17.

In operation the wheels of the automobile, either at the front or rearend as desired, are run directly-onto the supports 17 from grade, andthe stops 21 are then placed in position yto the front and rear of thesewheels. The hoistl may then be moved -upwardly to raise the end of theautomobile by winding the cable 38 on thedrum 39. Any-desired ratio maybe secured by using greater or less numbers of pulley wheels 34 and 36,as will be obvious, so that a very small motor will do the workproperly, and

also that the-device may be easily operated ,by hand, if desired. fr

Having thus set forth the nature of -my invent-ion, .what I claim is:

1. In an Vautomobile service lift, a pair of spaced upright supports, apair of wheel supports carried by said upright supports, stationarylguides for the upright supports, a cross beam connecting said supportsadjacent the lower ends thereof, pulleys carried by said beam, astationary supportadjacent the upper ends of the upright supports,pulleys carriedby the stationary support, a rotary drum, a flexiblecable 'running over said pulleys and drum, and means for operating thedrum.

2. In an automobile service lift, a pair of spaced upright supports, apair of wheel supports carried by said upright supports, stationaryguides for the upright supports,

v a cross beam connecting said supports adja- Y y l y by/said beam, astationary cross beam spaced y Thus Whenfth. mOtjQr .is used :to Operatethe abovesaid first mentioned beam, pulleys carried by the'stationarybeam, a rotary drum,

a flexible cable running over the pulleys and drum to raise and lowerthe upright supports, and means for operating the drum.

3. In an automobile service lift, upright stationary guides mounted in apit below grade, a pair of spaced upright movable supports guided bysaid guides, a pair of wheel supports mounted at the upper ends of theupright supports, a cross beam connecting the upright supports adjacenttheir lower ends, a stationary cross beam mounted in the pit adjacentthe upper end thereof, pulleys carried by said beams, a rotary drum,means for rotating the drum, and a flexible cable running over the drumand pulleys to raise and lower the upright supports.

4. In an automobile service lift, upright stationary guides mounted in apit below grade, a pair of spaced upright movable supports having iangesengaging said guides, a cross beam connecting said upright supportsadjacent the lower ends thereof, a pair of wheel supports mounted at theupper ends of the upright supports, spaced beams extending across thepit adjacent the upper end thereof and forming guides for the uprightsupports, a cross beam carried by said spaced beams, a rotary drum,pulleys carried by the cross beams, a

HeXible cable running over the druln and pulleys to raise and lower thesupports, and means for operating the drum.

5. In an automobile service lift, upright stationary guides mounted in apit below grade, a pair of spaced upright movable supports guided bysaid guides, a pair of wheel supports mounted at the upper ends of theupright supports, a cover for the upper end of the pit between the wheelsupports, closures carried by the upright supports below the wheelsupports to close the openings left by the wheel supports when they areraised, and means for raising and lowering the upright supports.

6. In an automobile service lift, upright stationary guides mounted in apit below grade, a pair of spaced upright movable supports guided bysaid guides, a pair of wheel supports mounted at the upper ends of theupright supports, said supports having elongated slots therein, wheelstops ar-l ranged to engage the front and rear of the wheels 'and havingheaded projections to extend through the slots and secure the stops tothe supports, and means for raising and vlowering the supports.

In testimony whereof I affix my signature.

ARTHUR G. LEAKE.

